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EP 1 687 693 A1

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(43) Date of publication: 09.08.2006 Bulletin 2006/32 (21) Application number: 04813500.8 (22) Date of filing: 23.11.2004

(51) International Patent Classification (IPC):  G06F 1/00(2006.01) (86) International application number: PCT/US2004/041187 (87) International publication number: WO 2005/055026 (16.06.2005 Gazette 2005/24)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LU MC NL PL PT RO SE SI SK TR (30) Priority: 26.11.2003 US 481708 P (71) Applicant: Citrix Systems, Inc. Fort Lauderdale, FL 33309 (US)

(72) Inventors: INNES, Andrew, Citrix Systems R. & D. Ltd. CambridgeCB3 6DW (GB) MAYERS, Chris, Citrix Systems R. & D. Ltd. Cambridge CB3 6DW (GB) HALLS, David, Citrix Systems R. & D. Ltd. Cambridge CB3 6DW (GB) WATERHOUSE, Simon, Citrix Systems R. & D. Ltd. Cambridge CB3 6DW (GB) (74) Representative: Jones, Keith William  Murgitroyd & Company Scotland House 165-169 Scotland Street Glasgow G5 8PL Glasgow G5 8PL (GB)